Aiming apparatus for guns.



MTNESSES K. VLLER.

I AIMING 'APPARATUS FOR GUNS.

APPLIoA'TvIoN FILED 116.111, 1910.

979,232.; Panama 11612111910.

"i, @Si 1 Y l 11h/'ENTER Q4/4Z@ KARL vLLER, or DUSSELDORF, GERMANY.

AIMING APPARATUS non GUNS.

Specification of Letters Patent.

Patented Dec. 20, 1910.

Application yfiled August 15, 1910. Serial No. 577,224.

To all 'whom 'it may concern.

Be it know-n that I, KARL VLL'ER, engineer, a subject of the German Emperor, residing at 17 Flicherstrasse, Dusseldorf, Germany, have invented certain new and useful Improvements in Aiming Apparatus for Guns; and I do hereby declare the following to be a full, clear, and exact descrip= tionA of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an aiming apparatus which purposes to solve the problem of automatically compensating the lateral 'deviation of the shot arising from the rifling at different elevations of the barrel.

The sighting device consisting of a horizon and a muzzle sight, or of a telescope, is mounted to rotate on the cradle or the barrel around a horizontal pin at right angles to the axis of the barrel; at the same time it is vrotatable about a vertical pin. It is provided with guiding rollerswhich cooperate with a guiding curve so formed that by its movement the sight-ing device is turned simultaneously about the horizontal pin and the vertical pin. yThe guiding curve is so constructed that it turns the sighting device in every position through a lateral angle about the vertical pin, which angle corresponds with the deviation of the shot at vthe angle of elevation which is formed between the sighting line and the axis of the barrel in the rotation about the horizontal pin. The guiding curve ispreferably of spiral form and carried by a disk adapted to rotate about a horizontal axis. In this manner ,a very compact construction is obtained.

Ther invention is illustrated by way of example in the accompanying drawing.

Figure 1 is a side elevation of the sighting device and Fig. 2 is a rear elevation thereof.

The carrier c is screwed to the cradle a in which the gun barrel b recoils when the gun is fired. On a horizontal pin cl mounted in this carrier turns an intermediate piece c carrying a vertical pin f'. On the latter rotatesthe sight carrier g whereon is mounted the Sighting device, in this case a horizon h and a muzzle sight c' and a telescope 7c. At its rear end the carrier g is provided on its under surface with an undercut guide rail m,

curved to an arc struck from the axis of thev pin f. In this rail engages a slide a which lis adjustable therein by means of an autol drive or the like by means of the hand wheel g. A segmental disk 1 having a spirally formed groove s is fixed to the free end of the sha-ft p; it is not plain but is curved at right angles to its axis of rot-ation, particularly at its periphery (see particularly Fig. Q). The slide n is forked over the disk r and carries a roller t which engages in the groove s. It also has two rollers u situated one on each side of the disk and engaging with the periphery thereof for lateral guiding.

The operation is as follows When the gun is being aimed the hand wheel g is turned to rotate the shaft p and with it the disk r. Owing to the Spiral form of the groove s the rear end of the sight carrier g is raised or lowered through the slide n according to the direction of rotation of the shaft p. In this manner the angle between the sighting line and the axis of the barrel is changed and this angle can be read off each time by a suitable device of known kind. During the turning movement of the disk r the rear end of the sight carrier g, in consequence of the curved construction of the disk, is simultaneously deiiected laterally about the pin f by the rollers a. The position of the carrier g is thus varied in horizontal direction correspondingly with variations of the angle between the sighting line and the axis of the barrel. The curvature on the surface of the disk r is such that the lateral deviation of the shot is exactly compensated for at each elevation of the barrel Vby the lateral deflection of the Sighting line.

may equally well be constructed in various ways.

Having thus described my invention and the best means I know of carrying the same into practical effect, I claim l. In an aiming apparatus for guns, the combination with a sighting device, a carrier for supporting the latter having a hori- Zontal pivot bearing and a vertical pivot bearing, a hifurcated element depending from said carrier at one end thereof, a rotary disk having cam surfaces at right angles to each other for engaging said element for raising and lowering the carrier on its horizontal bearing and for shifting it laterally on its vertical bearing.

2. In an aiming apparatus for guns, the combination with a sighting device, a carrier for supporting the latter having a hori- Zontal pivot bearing and a vertical pivot bearing, a bifurcated element depending from said carrier at one end thereof, a rotary disk of cam formation engaging said element for raising and lowering the carrier on its horizontal bearing, said disk being masse curved at right angles to its axis of rotation for moving said carrier on its vertical bearing.

3. In an aiming apparatus for guns, the combination with a sighting device, a car rier for supporting the latter having a horizontal pivot bearing and a. vertical pivot bearing, a muzzle sight at one end of the carrier, a sighting device mounted on the other end of the carrier, a bifurcated element depending from one end of the carrier, a rotary cam disk fitted between the members of said bifurcated element, and means for rotating said disk, which rotation is designed to effect the raising or lowering of the carrier and the lateral shifting thereof, said disk being curved at right angles to its axis of rotation.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

KARL VOLLER. [Ls] Witnesses: y

ALFRED HENKEL, WALTER VONNEGUT. 

